Improvement in pumps



A11T NrrED STATES PATENT GEFICE.

GEORGE S. GREEN, OF LEAVENWORTH, KANSAS.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 155,721, dated October G, i874; application filed August 31, 1874.

To all whom it may concern:

Corresponding parts in the two figures are 4 designated by like letters.

This invention relates to improvements in pumps; and it consists of the employment, in the pump-cylinders, of elastic tubing or packing, inclosing or surrounding the piston-rods, and attached at their lower ends to the pistons, and at their -upper ends tothe upper cylinder-heads; secondly, of a V-shaped arrangement of pipes or tubes attached to the lower cylinder-heads, and supplied each with a valve at their lower extremities, and having their upper extremities opened and closed by valves, substantially as hereinafter more fully set forth.

To enable others skilled in the art to make a-nd use my invention, I will proceed to describeit.

In the annexed drawing, A A refer to the pump-cylinders, of the ordinary construction, and united to, and communicating with, a centrally-disposed chamber, a, by means of short curved or arched tubes or pipes a1 al, by whichrthe ascendingl water will be facilitated in its passage to said chamber a, from which it is takeni and discharged through a Vcurved tube or spout, a2, extending upwardly from 4the pistons C O', which are provided with va-lves c c', properly seated and confined thereto by the. said cages c o. D D are elastic tubes or packing surrounding or inclosing the piston-rods B B, and attached, at their lower ends, to the cages c o of the pistons C O', and, at their upper ends, to the upper cylinderheads Al A1, the object of which being to afford or furnish an air-tight packing around the openings' in the cylinder-heads, through which the piston-rods enter the cylinders to prevent the escape or forcing of the water out oi' the cylinders at these points while the pump is at work. These elastic tubes or packing may be provided with iianges or margins d d, which receive screws d d inserted through the upper cylinder-heads A1 A1 for their attachment to the said heads. They expand as the piston-rods descend and collapse as the latter ascend, thus crowding up around the rods air-tight. E E is a V-shaped arrangement of pipes or tubes, attached at their divergent ends to the lower cylinder-heads A2 A2, which are opened and closed by the valves vergent ends of the pipes E El are disposed valves el el, which open and close a transverse passage, e2, in the Lipper end of the wellpipe F. By this arrangement and construction of pipes and valves a constant supply or ow' of Water is kept up during the working of the pump. A post, g, interposed between the cylinders AA, where it is secured, as indicated in Fig. 2, or otherwise, forms a support or fulcrum for the pump-handle O above alluded to.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. The elastic tubing or packing D I), combined with the cylinders A A, pistons and piston-rodsC C B B, substantially as and for the purpose set forth.

2. The V-shaped arrangement of pipes E E, having the valves e1 el, in combination with the cylinders A A, having the valves e e, sub stautially as and for the purpose specified.

In testimony whereof I have hereunto signed my name in presence of two subscribing wit- GEORGE SLOAN GREEN.

Witnesses:

GEORGE W. GODDARD, WM. Voss. 

